Optical-field-ionized plasma x-ray lasers

Journal Article · Fri May 01 04:00:00 EDT 1992 · Physical Review A. General Physics; (United States)

DOI:https://doi.org/10.1103/PhysRevA.45.6761· OSTI ID:7237282

Eder, D C; Amendt, P; Wilks, S C ^[1]

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1. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)

A tabletop x-ray laser scheme involving lasing to the ground state of an ion following optical-field-induced ionization by a high-intensity short-pulse laser is studied. The role of the ground state in reducing the saturation intensity is calculated to be larger for H-like ions as compared with the effect in Li-like ions. Energy efficiencies of order 10{sup {minus}5} are calculated for the 3{ital d}{sub 5/2-}2{ital p}{sub 3/2} transition at 98 A in Li-like Ne. The efficiency calculations are based on a driving laser with an intensity of 3{times}10{sup 17} W/cm{sup 2}, a wavelength of 0.25 {mu}m, a pulse duration of 100 fsec, and an input energy of 25--100 mJ. A correction to the standard stimulated Raman scattering growth rate is given for a finite laser pulse. Use of short pulses is shown to be sufficient to control heating from stimulated Raman scattering in Li-like Ne. Extending the scheme to shorter wavelengths (e.g., Li-like Al at 52 A) is difficult because of reduced efficiencies and excessive electron heating from Raman scattering.

• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 7237282
• Journal Information: Physical Review A. General Physics; (United States), Journal Name: Physical Review A. General Physics; (United States) Vol. 45:9; ISSN 1050-2947; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
ALKALI METALS
ATOMS
ELEMENTS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
FEASIBILITY STUDIES
GROUND STATES
HYDROGEN
IONIZATION
IRRADIATION
ISOELECTRONIC ATOMS
LASERS
LITHIUM
METALS
NONMETALS
PHOTOIONIZATION
PLASMA
PULSED IRRADIATION
X-RAY LASERS